Olympic bronze medalist Ronda Rousey defended her UFC women's bantamweight title and ended Olympic silver medalist Sara McMann's night early with a perfectly time liver shot to the knee in the first round of their UFC 170 main event in Las Vegas.

It is being dubbed the battle of the Olympians.
UFC women's bantamweight champ Ronda Rousey is a Olympic bronze medalist in Judo, while McMann is the first American female wrestler to medal, a silver at the 2004 Athens games.